/**
  * Prove of availability to getByKey list of attributes, that can have muptiple values within
  * given <code>attributeGroupCode</code>.
  */
 @Test
 public void testFindAttributesWithMultipleValues2() {
   // product has 5 attributes with allowed multiple values
   List<Attribute> list =
       attributeService.findAttributesWithMultipleValues(AttributeGroupNames.PRODUCT);
   assertNotNull(list);
   assertEquals(5, list.size());
   // shop has not attributes with multiple values
   list = attributeService.findAttributesWithMultipleValues(AttributeGroupNames.SHOP);
   assertNull(list);
 }
 @Test
 public void testFindAttributesWithMultipleValues1() {
   assertEquals(
       5, attributeService.findAttributesWithMultipleValues(AttributeGroupNames.PRODUCT).size());
 }